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| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
2 pcs
|
2 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
| Category | |
| Manufacturer Name | |
| AEC Qualified | |
| Agency Approvals | |
| Current | |
| Halogen Free | |
| Height | |
| Initial Resistance (Rmin/Rmax) | |
| Lead Spacing | |
| Max Current (Imax) | |
| Mounting Type | |
| Operating Temperature | |
| Power Dissipation (Typical) | |
| Prop 65 | |
| Resistance | |
| SVHC Present | |
| Storage Temperature | |
| Tape & Reel | |
| Termination Style | |
| Time to Trip | |
| Trip Current (Itrip) | |
| Type | |
| Voltage |
The Bourns MF-R040-2 is a polymeric PTC resettable fuse from the MF-R series. It is designed for overcurrent protection in a variety of electronic circuits. The device has a hold current of 400 mA at 23°C and a trip current of 800 mA. It can withstand a maximum voltage of 60 V and a maximum fault current of 40 A.
The initial resistance at 23°C ranges from 0.52 Ω to 0.86 Ω, with a post-trip resistance maximum of 1.29 Ω. The time to trip at 2.0 A is typically 3.8 seconds, and the typical power dissipation is 0.55 W. The operating temperature range is -40°C to 85°C.
The MF-R040-2 is housed in a radial disc package with through-hole mounting. The lead spacing is 5.10 mm, and the device dimensions are 7.40 mm diameter by 3.10 mm thickness, with a height of 13.70 mm. It is suitable for use in power supplies, battery chargers, automotive electronics, and telecommunications equipment.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.54 | $0.54 |
| 10+ | $0.41 | $0.41 |
| 50+ | $0.39 | $0.39 |
| 100+ | $0.33 | $0.33 |
| 3,000+ | $0.31 | $0.31 |
| 6,000+ | $0.28 | $0.28 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The hold current is 400 mA at 23°C.
The maximum voltage rating is 60 V.
The maximum fault current is 40 A.
The time to trip is 3.8 seconds at 2.0 A.
The package is Radial, Disc with through-hole mounting and 5.10 mm lead spacing.
The operating temperature range is -40°C to 85°C.
The initial resistance range is 0.52 Ω to 0.86 Ω at 23°C.